2GB DDR3-1333 (PC3-10666) RAM Memory Upgrade for the Compaq HP Probook 6450b (WZ233UT#ABA) (Genuine A-Tech Brand) 2GB DDR3-1333 (PC3-10666) RAM Memory Upgrade for the Compaq HP Probook 6450b (WZ233UT#ABA) 100% Genuine A-Tech Brand Memory 2GB DDR3-1333 PC3-10600 Non-ECC Unbuffered 204 Pin 1.5V CL=9 Memory Limited Lifetime Warranty High Quality Ram specifically designed for the Compaq HP Probook 6450b (WZ233UT#ABA)